An intense aerial ultrasonic source containing a compact circular vibrating plate with a uniform rod-type partially grooved source that can produce large displacement in part of the piston vibration and emit intense sound waves in a direction perpendicular to the vibration surface is investigated. Two different compact circular vibrating plates of intense aerial ultrasonic sources (square grooves and round grooves) are designed by considering the stress generated in ultrasonic sources and the sound pressure of the radiated sound waves. The vibration displacement distribution, the directivity of the emitted sound waves, and the input/output characteristics in designed ultrasonic sources are discussed. It was found that the sound waves can be emitted farther away perpendicular to the vibration surface at a very high sound pressure compared with traditional sources.

研究了一种包含紧凑圆形振动板的强航空超声源，该振动板具有均匀的杆式部分槽源，可以在部分活塞振动中产生大位移，并在垂直于振动表面的方向上发射强声波。考虑到超声波源产生的应力和辐射声波的声压，设计了两种不同的紧凑型强航空超声波源（方槽和圆槽）圆形振动板。讨论了所设计的超声波源的振动位移分布、发射声波的方向性和输入/输出特性。